I'm in the last stretch of the racial reincarnation grind at the moment (6 lives to go) and I quite enjoyed doing an inquisitive again alst life but figured I'd do my last drow life as a dark hunter archer. As I'm this close I'm trying to play fun stuff but also trying to only play builds that can reliably solo content or one side of quests that allow splitting. Horizon Walker ain't it.
Something I didn't notice as much of an issue as an inquisitive (probably due to the crazy number of attacks per second) is quite how much bows STILL dry fire at melee range, especially when you're very close and maybe backing up to stay out of melee. It's dreadful still. It's been absolutely miserable seeing my manyshots and tonnes of attacks in a row whiff when this was supposedly fixed last patch.
As for Horizon Walker:
I need to state that I know this is probably actually a really good tree for DPSing raid bosses thanks to its capacity to reduce enemy defenses and to build up archer's focus faster, but I'm not doing that, a lot of DDO players aren't. a lot of us are in the hamster wheel.
The entire tree from the perspective of someone levelling through it with quite a few past lives:
Mark Target (and its core upgrades) great the rare occasion you fight a higher HP boss, no notes apart from the fact during heroic levelling that's not a thing
Max dex bonus in cores: excludes everyone but light armour builds, which means that Dark Hunter has no use for them. It's like they made a universal tree designed for 1 class that already has two ranged trees and then excluded big chunks of it from the archetype of that class that LOSES A RANGED TREE.
Haste: 2 minute cooldown haste that won't last 2 minutes till epic level, basically useless
DDoor: too late by level 18
Capstone: Pretty good, though again the issue is when levelling you fight many mobs, not few mobs with high HP. The core ability of an enhancement tree simply cannot be "does way more damage to 1 guy in a pack of 15 mobs" while levelling. Additionally 2 more manyshot charges is what I'd call paltry. Maybe I'd love it more at epic levels, but I doubt I'll be playing this build into epic. The dry firing ranged attacks and lack of aoe has done me in.
Tier 1:
Eye for accuracy: Standard in tree thing, no notes.
Opening Shot: Pretty good bonus damage
Planar Dodge: Standard in tree thing, no notes.
Skills: Standard in tree thing, no notes.
Conjur Arrow: Fine, mandatory utility ability for an archer
Tier 2:
Walker Training: Standard in tree thing, no notes.
Take the opening: Good!
Protection from evil and good: Good defence
Skilled Navigator: so-so, don'tfind I need more traps save
Favoured enemy: Evil Outsider: GOOD! Especially as a Dark Hunter
Tier 3
No Step Missed: Worst battle trance because it has charges and conditions on use
Two places at once: good? There's some question as to the veracity of the goodness of displacement in reaper.
Hunter's focus: Great until you permanently turn off Archer's focus upon reaching IPS levels because DDO is dense with large mob packs
Tenacious hunter: sort of good, but see marked target
Ability score: Standard in tree thing, no notes.
Walker training: Standard in tree thing, no notes.
Tier4:
Corner the Quarry: It doesn't work on bosses AND all it does is makes one enemy stand still? wooooow Barely useful when levelling, probably OK for high reaper for locking mobs down
Walker's guidance: I really like this, nebulously useful as it is, no notes
Scattershot: !!!!Worst tier 4 enhancement in the game!!!! A melee cleave for bow users, a melee cleave that hits less targets than cleave, seems to dry fire a lot? Mysterious range and cone size? Why not just have it be like Warlock's chain shot? Why does it have to be close range? Why only 3 targets? Boggles the mind. Shares charges with Manyshot for some reason? Waste of manyshot charges. I honestly thought this might fill aoe gaps and allow you to be in archer's focus more...given how theres other archers focus bonuses in the tree.
Ability score: Standard in tree thing, no notes.
Tier 5:
Feywild attunement: Good, though this form of bonuses is available lots of places, it's nice to be able to get it here just in case
Banish the quarry: Good but not sure it's worth getting corner the quarry just to get this
Misty step: Good, actually the only tier 5 I wish I could have as a dark hunter
Powershot: Sounds good but again, when levelling what's some force damage scaled with range power when the manyshot crit has already done thousands of damage?
Improved archer's focus: Again, for levelling archer's focus is very useless once you have IPS.
I don't have a solution or any good suggestions apart from to be less stingy with some of the abilities in the tree that should be standout abilities in the tree, particularly scattershot, the SLAs and anything to do with armour.
Anyway, this was mostly a rant which is mostly just me whining, feel free to tell me I'm playing the game wrong now 
